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An adult Galápagos tortoise

The Galápagos tortoise is the largest living species of tortoise and 10th-heaviest living reptile. With life spans in the wild of over 100 years, it is one of the longest-lived vertebrates. The tortoise is native to seven of the Galápagos Islands, a volcanic archipelago about 1,000 km (620 mi) west of the Ecuadorian mainland. Shell size and shape vary between populations; these differences helped Charles Darwin to develop his theory of evolution. Tortoise numbers declined from over 250,000 in the 16th century to a low of around 3,000 in the 1970s. The decline was caused by hunting for tortoise meat and oil, habitat clearance for agriculture, and introduction of non-native animals such as rats, goats, and pigs. Ten subspecies of the original fifteen survive in the wild. An eleventh subspecies has only a single known living individual, in captivity, nicknamed Lonesome George. Conservation efforts beginning in the 20th century have resulted in thousands of captive-bred juveniles being released onto their home islands, and it is estimated that numbers exceeded 19,000 at the start of the 21st century. Despite this rebound, the species as a whole is classified as "Vulnerable" by the International Union for Conservation of Nature (IUCN). (more...)

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April 14: Holy Saturday (Eastern Christianity, 2012); Easter Saturday (Western Christianity, 2012); N'Ko Alphabet Day in West Africa; Day of the Georgian language in Georgia (1978)

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Today's featured picture

Metallic Ringtail

The Metallic Ringtail (Austrolestes cingulatus) is an Australian species of damselfly, so named because of its glossy metallic colouration and the "rings" on each abdominal segment. It is widely distributed in Tasmania, Victoria, eastern New South Wales and south eastern Queensland.

Photo: JJ Harrison

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